From 805c27ce671937ff9506130e4b026c64ee76fc5e Mon Sep 17 00:00:00 2001
From: Jonathan Schleifer <js@heap.zone>
Date: Mon, 5 Nov 2018 23:24:15 +0100
Subject: [PATCH] configure: Do not use pkg-config to find OpenSSL

This allows working with both OpenSSL and LibreSSL.
---
 .gitignore   |  1 +
 autogen.sh   |  2 +-
 configure.ac | 14 ++++----------
 3 files changed, 6 insertions(+), 11 deletions(-)

diff --git a/.gitignore b/.gitignore
index b1db827..37de9d6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,6 +2,7 @@
 *.framework
 *.o
 *.so
+*.so.*
 *~
 .deps
 aclocal.m4
diff --git a/autogen.sh b/autogen.sh
index 1db3b32..218fb7c 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -3,7 +3,7 @@ set -e
 
 # Set a version for OpenBSD
 : ${AUTOCONF_VERSION:=2.69}
-: ${AUTOMAKE_VERSION:=1.15}
+: ${AUTOMAKE_VERSION:=1.16}
 export AUTOCONF_VERSION AUTOMAKE_VERSION
 
 aclocal -I build-aux/m4
diff --git a/configure.ac b/configure.ac
index 2a27959..2e4127a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -44,17 +44,11 @@ AS_IF([test x"$enable_static" = x"yes" -o x"$enable_shared" = x"no"], [
 	AC_SUBST(OBJOPENSSL_STATIC_LIB, "libobjopenssl.a")
 ])
 
-PKG_CHECK_MODULES(openssl, [openssl >= 1.0.2], [
-	CPPFLAGS="$CPPFLAGS $openssl_CFLAGS"
-	LIBS="$LIBS $openssl_LIBS"
+AC_CHECK_LIB(ssl, main, [
+	LIBS="$LIBS -lssl -lcrypto"
 ], [
-	PKG_CHECK_MODULES(eopenssl, [eopenssl >= 1.0.2], [
-		CPPFLAGS="$CPPFLAGS $eopenssl_CFLAGS"
-		LIBS="$LIBS $eopenssl_LIBS"
-	], [
-		AC_MSG_ERROR(You need openssl >= 1.0.2 installed!)
-	])
-])
+	AC_MSG_ERROR(You need openssl >= 1.0.2 installed!)
+], [-lcrypto])
 
 AS_IF([test x"$GOBJC" = x"yes"], [
 	OBJCFLAGS="$OBJCFLAGS -Wwrite-strings -Wpointer-arith -Werror"